高带宽运放有哪些?谢谢啊!
发布网友
发布时间：2022-04-23 15:05
共4个回答
热心网友
时间：2023-10-05 08:16
具有关断状态的宽带超低噪声电压反馈运算放大器
这个产品市面上目前只有英文的描述。
描述
The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.
The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth proct, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-toDigital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.
特性
HIGH GAIN BANDWIDTH: 3.9GHz
LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
VERY LOW DISTORTION: –105dBc (5MHz)
HIGH SLEW RATE: 950V/µs
HIGH DC ACCURACY: VIO < ±100µV
LOW SUPPLY CURRENT: 18.1mA
LOW SHUTDOWN POWER: 2mW
STABLE FOR GAINS 12
APPLICATIONS
HIGH DYNAMIC RANGE ADC PREAMPS
LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
WIDEBAND, HIGH GAIN AMPLIFIERS
LOW NOISE DIFFERENTIAL RECEIVERS
ULTRASOUND CHANNEL AMPLIFIERS
IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642
All trademarks are the property of their respective owners.
热心网友
时间：2023-10-05 08:16
追答847是我用过带宽比较大的，所以给你建议一下，不用谢
热心网友
时间：2023-10-05 08:17
热心网友
时间：2023-10-05 08:17
